Lexical Neighborhoods and the Word-Form Representations of 14-Month-Olds

Psychological Science - Tập 13 Số 5 - Trang 480-484 - 2002
Daniel Swingley1, Richard Ν. Aslin2
1Phonological Learning for Speech Perception, MPI for Psycholinguistics, Max Planck Society
2Department of Brain and Cognitive Sciences, University of Rochester

Tóm tắt

The degree to which infants represent phonetic detail in words has been a source of controversy in phonology and developmental psychology. One prominent hypothesis holds that infants store words in a vague or inaccurate form until the learning of similar-sounding neighbors forces attention to subtle phonetic distinctions. In the experiment reported here, we used a visual fixation task to assess word recognition. We present the first evidence indicating that, in fact, the lexical representations of 14- and 15-month-olds are encoded in fine detail, even when this detail is not functionally necessary for distinguishing similar words in the infant's vocabulary. Exposure to words is sufficient for well-specified lexical representations, even well before the vocabulary spurt. These results suggest developmental continuity in infants' representations of speech: As infants begin to build a vocabulary and learn word meanings, they use the perceptual abilities previously demonstrated in tasks testing the discrimination and categorization of meaningless syllables.

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Thông tin xuất bản

Psychological Science

Tập 13 Số 5

480-484

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